Ayodele T.R และ Ogunjuyigbe A.S.O. (2014) Mathematical methods and software tools for designing and economic analysis of hybrid energy system. <i>International Journal of Renewable Energy</i>, <i>Vol. 9</i>(No.1), 57-68.Ayodele T.R และ Ogunjuyigbe A.S.O. "Mathematical methods and software tools for designing and economic analysis of hybrid energy system". International Journal of Renewable Energy Vol. 9 (2014):57-68.Ayodele T.R และ Ogunjuyigbe A.S.O. Mathematical methods and software tools for designing and economic analysis of hybrid energy system. School of Renewable Energy Technology:ม.ป.ท. 2014.